Reaming jig



` March 15, 1927. M. L SEILER REAMING JIG Filed Sept. 17,1921 3 Sheets-Sheet l n Rl l. Y QM v .we En) w V J A N] A IZ March 15, 1927. 1,621,137

. f v M. l. SEILERv l REAMING vJrs -Filed sept. 17, 1921 s sheets-sheet 2 wn'NNEssEs l .1 A

ATTORNEY WITNESSES j r l A BY, l l Cb/za@ I l,62l,l 7 March 15, 192'?. M L SEILER v 3 REAMI NG JIG Filed Sept. 17. 1921 3 Sheets-Sheet 5 Yio Patented Mar, 15, i927.

MICHAELI. SEILER, OF MILLERSBURG, PENSYLVNA, ASSIGNOR TO KEYSTON BEAMER t TOOL CO., 0F QMIILLEBISBTJRG?,v PENNSYLVANIA, A CORIP()JLIVAILION'y CE- PENNSYLVANIA.

lRNAi/IIN@ are.

Application flied september 17,1921. serial No.y 501,306.

This invention has reference to reamers for automobile transmission parts,eand its object is to provide means .whereby translmission drums and other articles of like nature having bushings or holes, may be reamed straight and true with absolute ace curacy and with great ease, the reamiiig jig being .characterized by simplicity and `iigid ity of construction. y

The reaining jig, while not confined to any particular make of automobile, isvdesigned more particularly for `use in connection with the Ford automobile. Ayiitervbeing i'un for a period of time, certainv parts, es? pecially'those of the transmission assembly of the automobile, become worn andv loose and consequently produce noises, which are annoying in themselves, and are productive of wear in other parts, and ordinarily must be replaced by new parts and relitted to those parts which are not replaced, such operations resultingl in'expensedue to the re laceinents and reiittings.

y the use of the instrumentalitiesk forming thesubject matter. ot this invention, the

several elements ot the transmission may be removed from the transmission assembly. andV be separately Vmounted vin thetransmission reamer jig with the assurance that bushings or other parts will 'be accurately centered, and reamed straight and true, both with respect to themselves and to other parts of the assembly, with the labsolute assurance that inished work will be accurately performed without the necessity ofemploying highly skilled laboi'. e A Y,

rllhe. invention `will-lee best understoody from a consideration ofthe followingdetailed descriptiony taken in connectiony with the accompanying drawings ormingla'part .of this specification, with the understanding, however, that the invention is not conlined to any strict conformity Hwith lthe showing of the drawings but may be changed and modified so long as such changes and modifications mark no material departure from the salient featuresof the invention as eX- pressed in the .appended claims.

In the drawings:

Fig. 1 is a perspective viewA of the jig frame with the clutch casing of anM autoincbile transmission mounted therein, in position` for reaming vtheloushings, carried by said clutchcasing. v

l Fig. Y2 is `a longitudinal diametric "sectionv thereof. y .Y Figj is a sectiony ony the line 3.-"3of FigZ@ Fig. 4E is` a perspective view of a splitl or two-part taper ,ring for ylioldingand centerinfr parts lodged in the i'e'amer frame.

lig. 5 isa faceview of a screw. ring for forcing parts into the taper clamp ring.:

Fig. 6 is a longitudinal vertical section Vthrough the reainer jig with parts for adapt?,

ing it tor holding other elements of the auto-7 erframe. l f.

Fig. 9 is a section onthe line 9-9 of Referring to the drawings', as shown Vin Fig. land ass ciatedigures, a frame l of a. reamer pg, comprising an elongated base'.l 2' with a post lerected on oneend and anotherpost el erected on the other end, while between the .two posts there is 'locatedl an upstandiiig ring 5 which, together'withthc posts 3 and 4, isv or may be cast in one piece with the base l2. A e f 'i vSince thepost l and ring'are, in some of the operations of the reanie'r, subjectedto considerable strain tending to vseparatathem, there is provided Aa brace arm 4a made fast at one end to the top of the post ll and atthe other end to Vthe top or" thering 5 whereby the post lha-nd ring 5 are held rigidlyto- ,Qether. For. vconvenience 'inf manufact-ure, the brace 4a isv madeseparate from thepost iandring.

p The ring 5 is providedv an innerV face Gitapering fromZt-hat side of the lring toward Vtheypost 3 to thesideiof the'griiig toward the post 4- and the ring. 5 hasi'an" entering screw-threaded portion 7 concen.

tric with the axis of the ring and extendingV into the taper portion 6. VAdapted Qto the screw-threaded-portion 7 isan eXteriorly.

threaded clamp ring 8 provided on one face with a circular series of pinsA 9 by mea-nsof which the ring may be screwed, byhand it enough to engage a beveled split, Wedgelike centeringj'ring 1,0 conforming." to, th taper surface 6V on the inner face ofthe ring 5. The split or two-part Wedge ringl 1Q?, SlildpiedgtoV embrace a clutchhousing 1,l forming. partfrofthc automobile transmission assembly'and therefore requiring no special description, except that the clutch.4 housing is, as is customary, provided'with a'holloW tube 12 enclosing lbushings Vl uponvr 'whshthe habs, efevlnountsl 1.11 the @psration ofA the automobile, the bushings 13y sustain ,the Wear ofY the clutchV housing; and

' when'loosenessoccursit' vis due to the fivear -of such bushings,Y Whether such Wear be con# Vcentric to the axis ofrotation or, becomes eccentricr thereto,`j resulting; in ylooseness and chattering'ofthe parts, with the attendant noisegjQrdinarily' the ivearA yis taken up by. dijivi g neiv onesj With l the invention, the

- lrenswlff thfpfirtsi and attendant expense f isa avsidsflbyremivns. tbs Clutch .houses withl those Yparts Iwhich belong toit and 'Slightly-enlarging the' 'bushings by Naming Y thenig` l `vTo accomplish' this there is provided rod 'or' shaft 14 Von which are formed aligned yreamsers 15 ofappropriate size and spaced apartl so that they may pass throughand'enlarge to the desired size bushings 13.V

VfmMou/ifted' in'Y the post 3 is a taperl split 16 terminatingatthe end toward Ythefrijrig 5 .in athreaded extension 17V refY lceiving'af screw collar 18 :Wi t h spanner sock-k ets `19therein, whereby the collar- 18.' may engagegand draw the bushing 16 firmly intoy place, the cllarf18bearing 'against th'erinner1 facebffthe post 3; Fitted inv and extending inpfrtorWhOlly through the bushing 16 is a split' collet 2t) which by they drawing' ect of the collar18 on .the bushing 16,. becomes seated and centered'inthe bushing f and' binds Vupon* 4`the .corresponding end por tion o therodijor shaft to centeritjn the longitudinal axisiof rot-ation of said l rod or :liljvvithout lostnlotion.A Vr

VSimilarly located in the post'l-,is' a taper split' biishing 21,'extending through the post tfapdjatfthe end toward ythe ring 5 being i eiiteriorly screwsthreaded, as shown at 22,

j to` receive Va screw` collar 23 having 'spans ner sockets24wherebythe coll,ar23"may be 'turned :by means of 'a sp anner' yi'french. The

shaftY 'orjrod 114% Within" the bushing 21 vis surroi'mdedby asplit collet contracted u on lthe shaft lfbylongitudinal movement o the bushing 21t` the left as viewed in Fig. Y

" V'When lity is desired tofreain out the bushings 133 oftheclutch housingoflthe transmission,fsuch housing,isplacedin the ring 5, thesplit Wedgek ringlt);A is placed about thehousing andthe ring'B isscrewedinto the supportingfring '5: Now, the shaft-121 ngoutthe Worn bushings and snbsti" may be introduced into place until it reaches the collet 25'? and the collet=20 mayy Vultimately be turned,y whereupon all th-eparts are tightened up to bring vthem into accurate. alignment@ insure. .Gentsfssassuhse: ,lute` accuracy, of Work, VBy applying a handle 26 to the shaft the, may be yturned and by applying endwise pressure tothe handle 26, especially on small Work, v the reamers 15 are caused to traverse the Vbushings 13 andenlarge them interiorlyto size, producing straight, true, centeredand aligned passages'in'the severa-l bushings 13j,

correcting 'any Worn Ibearings Y in? the bfusliings and restoring thevvorkng parte, sofar the clutch'housing is concerned, toI theV originalY condition. This 'oper'at-ion is easily accomplished; The,A reamerl isiv of@ extreme;

simplicity and particularly 4rig'ridin-itscon-l structionand the Werl; accomplished? is ac`Ar curate Within the'limits :of-(tine "mach-ine work.' n i Y "Asf'a` convenience, pins'7 27' are p rovidec lon the ring 5 beloyv theseating"t p'osition'of the ring 8 vto support the latteryvhile beingentered into said screiv-threaded portionig i v ofthe ring 5.

and .the reamer 30 is Itherefore V`much?,sl'ie'rt'er than the, combined ream'ers 15. 'i

l'reamer frame 1' isjor may be', ian-the shoyving'of Fig. 6,;fthe same-as in tlfreshowly ing of Figfl and `associated -figures, but be; cause' of the largerjsize ofthef 'rea1ner '3Q and shaft 31, the posts-Band l -haye-bush'- ingsl 416a and 21?'through YWhichY the shaft 31 passes-and in,"tvlricl-i''theV shaftbearsrli`V rectly, Withoutthe .interposition of-fthe colclude i the, use of similar! collets. kThe bushf ings 1 6"L and 21a are heldin lplace clamp collars -1'8 and-23, respectivelyflike the structure shown iii-Figs. 1 and g2'. "All those parts shownin Fig. 6,"Which-are also-shown in Figsfl kand 2., are c lesignatedgby the same reference numerals andy hence the, descripv tion thereof-is not repeated; v

In Figs. 7 and 8 the reamerframef' 1=and p arts in Aconn'non with the showingofy Figs.

1 and^2,7are designatedby the same-reference numerals, 'but the lrearnerflstructure is arranged'- for A reamingE out the bushingsxof the planetary gears employed2in-the#:trans mission assembly of the Ford automobile. Such gears, of Which one set, indicated at 33, is shown in each of Figs. 7 and 8, each comprises three gear Wheels 34 secured together in face to face engagement by rivets 35 and provided With a common bushing 36 shown in Fig. 8. Each group 33 ot three axially joined gear Wheels 34 is of such short axial length than the bushing 36 may be bored by a single reamer 37 formed on a reamer shaft 38 mounted in the posts 3 and 4 in the collets 2O and 25, respectively, in turn mounted in bushings 16 and 21 clamped in place by collars 18 and 23, all similar to the showing of Figs. 1 and 2. v

The planetary gears are held in a split taper block 39 having a taper periphery 40 to it the inner taper Wall 6 of the ring 5, as in the arrangement shown in Figs. 1 and 2.

In Fig. 9 the bushing 16 is shown as provided With a seat 41 to receive a set screw 42 entering the seat to hold the bushing against turning With the collar 18 and this same arrangement may be employed in conjunction with the structure shown in the other figures of the drawings Where applicable.

What is claimed is 2- y 1. In a reaming jig, thel combination of a rigid ring-shaped Work holder surrounding the part to be reamed and having an interior taper surface with the larger end threaded, a two-part Wedge ring for interposition'between the taper surface of the Work holder` and the Work in advance of the threaded end, and a threaded clamping ring adapted to be screwed into the work holder and engaging with the two-part Wedge ring to move the same and clamp the Work axially and by radial compression.

2. In a reaming jig for automobile transmission parts, an intermediate ring-shaped holder for the part to be reamed, clamping means carried by the Work holderV in surparts of automobile transmissions, comprising a basic member, an intermediate ringshaped WorkV holder erected thereonpostsy rising from the basic member on opposite sides of the ring-shaped Work holder, With the basic member, posts and ring-shaped member all cast in one piece, and guides for a reamer mounted in the posts and provided With adjusting means, for aligning' said guides, concentric With the,Y axis of the Work holder.

4. A reaming jig for reaming therwearl parts of automobile transmissions, comprising a basic member, an intermediate ringshaped Work holder erected thereon, posts rising from the basic member on opposite sides of the ring-shaped Work holder, With the basic member, posts and ring-shaped member all cast in one piece, and guides for a reamer mounted in the posts and provided vvith adjusting means, for aligning said guides, concentric with the axis of the work holder, the ring-shaped Work holder and that post on the side of the ring-shaped Work holder remote from the entering end of the reamer structure having a brace con-V necting them and resistant to forces tending to separate the post and ring-shaped Work holder.

In testimony, that I claim the foregoing as my own, I have hereto aflixed by signature.

MICHAEL I.V SEILER. 

